OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application8 R* Z& B2 g/ ~' m7 p: B
/** ^/ V/ [/ ~& o) v. e0 a
* edma_test.c: L- ^1 N, D- u
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* brief EDMA3 Test Application9 u8 @2 I- Y9 @3 s
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ j' C. F9 ^2 i9 k ?* D
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 v9 W- x# A) j: y/ \* n
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*/ z5 n* e1 m8 ?$ r& z6 k( v3 G1 i
* This program is distributed "as is" WITHOUT ANY WARRANTY of any k& ?: F/ O. @) I' t! x
* kind, whether express or implied; without even the implied warranty" i+ V0 d) {& M! [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ N9 o3 R9 P" ]* p4 Z, l1 i
* GNU General Public License for more details.
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#include <linux/module.h>. H7 \$ @3 l0 o$ N4 F# i# ?
#include <linux/init.h>+ L: g# c6 l/ y5 ]: o6 o& N& L8 b
#include <linux/errno.h>/ ^6 x/ e& W9 e3 r
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>9 m0 ]. t8 t/ D* ` p8 d) X: e+ } j
#include <linux/sysctl.h>' g7 y0 |: u& W7 \
#include <linux/mm.h>, x' g! N* s& s7 {
#include <linux/dma-mapping.h>. C; M8 D v( X5 a: I9 j- L0 w- J
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#include <mach/memory.h>9 m q1 N* ]8 F1 j( Q# U
#include <mach/hardware.h>
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#include <mach/irqs.h>- @' r4 g1 V% j8 m. U; m
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) _- |) e# N, `% o+ n4 m
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): l e# {, R) s; w
#else
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#define DMA_PRINTK( x... )- `! L8 N+ I0 t' i9 v5 r
#define DMA_FN_IN4 t8 r# R9 R( ~0 Z$ e
#define DMA_FN_OUT
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#endif) r# M# S7 j5 p8 o1 z! y2 y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 _9 z' ~; ^1 u$ s0 d5 V
#define TCINTEN_SHIFT 20, z) s8 r6 H8 U( ?
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23, y! U3 B6 q$ I; {: P( D3 F; s m( V- V
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static volatile int irqraised1 = 0;0 m7 a2 M* ?# k; f& F
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ E4 i8 c9 j! j$ q
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dma_addr_t dmaphyssrc1 = 0;# e- W+ \& r' N6 E
dma_addr_t dmaphyssrc2 = 0;8 L: {6 K9 k6 E
dma_addr_t dmaphysdest1 = 0;. f" {( E- V5 N/ T) E: y
dma_addr_t dmaphysdest2 = 0;; a9 U2 e Y8 n5 `
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;2 \$ N s }% C- a' N
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;1 U& L% ?* F7 L% |! P8 B) ^
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static int acnt = 512;7 p/ ~2 D8 f1 }+ \- h$ |
static int bcnt = 8;1 c# E/ ?2 @) g! M9 e7 r5 R9 r
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);$ H, X2 i g: r
module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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